Re:Re: [PATCH] rtc: pm8xxx: clear alarm register when alarm is not enabled

[éçæ]

Hi,
It's the same as https://patchwork.ozlabs.org/patch/1257381/, so both commit is fine.

thanks


åääïAlexandre Belloni <alexandre.belloni@xxxxxxxxxxx>
åéææï2020-03-21 21:21:25
æääï"éçæ" <hankecai@xxxxxxxx>
æéäïa.zummo@xxxxxxxxxxxx,linux-rtc@xxxxxxxxxxxxxxx,linux-kernel@xxxxxxxxxxxxxxx,trivial@xxxxxxxxxx,kernel@xxxxxxxx
äéïRe: [PATCH] rtc: pm8xxx: clear alarm register when alarm is not enabled>Hi,
>
>Isn't that the same as:
>https://patchwork.ozlabs.org/patch/1257381/ ?
>
>On 21/03/2020 19:50:17+0800, éçæ wrote:
>> Clear alarm register when alarm is not enabled otherwise the consumer
>> may still start alarm timer if it find the alarm register is not zero.
>> 
>> Signed-off-by: hankecai <hankecai@xxxxxxxx>
>> ---
>>  drivers/rtc/rtc-pm8xxx.c | 11 +++++++++++
>>  1 file changed, 11 insertions(+)
>> 
>> diff --git a/drivers/rtc/rtc-pm8xxx.c b/drivers/rtc/rtc-pm8xxx.c
>> index 07ea1be3abb9..3fa5416ad90d 100644
>> --- a/drivers/rtc/rtc-pm8xxx.c
>> +++ b/drivers/rtc/rtc-pm8xxx.c
>> @@ -301,6 +301,7 @@ static int pm8xxx_rtc_alarm_irq_enable(struct device *dev, unsigned int enable)
>>  	struct pm8xxx_rtc *rtc_dd = dev_get_drvdata(dev);
>>  	const struct pm8xxx_rtc_regs *regs = rtc_dd->regs;
>>  	unsigned int ctrl_reg;
>> +	u8 value[NUM_8_BIT_RTC_REGS] = {0};
>>  
>>  	spin_lock_irqsave(&rtc_dd->ctrl_reg_lock, irq_flags);
>>  
>> @@ -319,6 +320,16 @@ static int pm8xxx_rtc_alarm_irq_enable(struct device *dev, unsigned int enable)
>>  		goto rtc_rw_fail;
>>  	}
>>  
>> +	/* Clear Alarm register */
>> +	if (!enable) {
>> +		rc = regmap_bulk_write(rtc_dd->regmap, regs->alarm_rw, value,
>> +				sizeof(value));
>> +		if (rc) {
>> +			dev_err(dev, "Clear RTC ALARM register failed\n");
>> +			goto rtc_rw_fail;
>> +		}
>> +	}
>> +
>>  rtc_rw_fail:
>>  	spin_unlock_irqrestore(&rtc_dd->ctrl_reg_lock, irq_flags);
>>  	return rc;
>> -- 
>> 2.21.0
>> 
>> 
>> 
>
>-- 
>Alexandre Belloni, Bootlin
>Embedded Linux and Kernel engineering
>https://bootlin.com